22245666778998 has 48 divisors (see below), whose sum is σ = 52113354982416. Its totient is φ = 6817550328000.

The previous prime is 22245666778967. The next prime is 22245666779009. The reversal of 22245666778998 is 89987766654222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189317665 + ... + 189435132.

It is an arithmetic number, because the mean of its divisors is an integer number (1085694895467).

Almost surely, 2^{22245666778998} is an apocalyptic number.

22245666778998 is an abundant number, since it is smaller than the sum of its proper divisors (29867688203418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22245666778998 is a wasteful number, since it uses less digits than its factorization.

22245666778998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378753069 (or 378753066 counting only the distinct ones).

The product of its digits is 8778792960, while the sum is 81.

The spelling of 22245666778998 in words is "twenty-two trillion, two hundred forty-five billion, six hundred sixty-six million, seven hundred seventy-eight thousand, nine hundred ninety-eight".